docs: def _check_team_exists(team):
      """
      Check that the team registry actually exists.
      """
      if team is None:
          return
  
      hostname = urlparse(get_registry_url(team)).hostname
      try:
          socket.gethostbyname(hostname)
      except IOError:
          try:
              # Do we have internet?
              socket.gethostbyname('quiltdata.com')
          except IOError:
              message = "Can't find quiltdata.com. Check your internet connection."
          else:
              message = "Unable to connect to registry. Is the team name %r correct?" % team
          raise CommandException(message)